From: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> Date: Thu, 16 Feb 2017 15:05:58 -0500 > add_node_ranges() takes 2.6s - 3.6s per 1T of boot time. On machine with 6T > memory it takes 15.4s, on 32T it would take 82s-115s of boot time. > This function sets NUMA ids for memory blocks, and scans the whole memory a > page at a time to do so. But, we could use values in latency groups mask > and match to determine the boundaries without checking every single page. > With the fix the add_node_ranges() time is reduced from 15.4s down to 0.2s > on machine with 6T memory. > > Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> > Reviewed-by: Babu Moger <babu.moger@xxxxxxxxxx> > Reviewed-by: Bob Picco <bob.picco@xxxxxxxxxx> Applied. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
